Remove the blades from your food processor and pour in your melted butter.
Work the butter into the dry ingredients with your hands, until it is 'crumbly'.

Spoon your crumble mixture into your pre-prepared tray and lightly compact it in creating an even surface for you place your apple rose.

Core and slice your apples into thin half spheres, store them immediately in a bowl of cool water to avoid browning of your apple slices due to oxidization.

Lay out your slices end to end on your benchtop, making as many rows as you have muffin spaces, ensuring the slices overlap generously (by about half a slice).
Gently roll up each row of apple slices to make your roses, and place carefully in each muffin space.

Place your caramel ingredients (caster sugar, lemon/lime juice, water) into a saucepan/pot and place over a medium heat to simmer. Watch this mixture closely, stirring occasionally until it turns slightly brown/caramel in colour, but being careful not to let it burn.
Once your satisfied with your caramel, drizzle it generously over each apple rose.

Place your crumbles in your pre-heated oven to bake for 30 minutes or until the edges of your apples have started to brown and allow to cool before removing from tin (the caramel needs to be able to cool in order to set and hold the base together.)